Box-motion for looms.



G. M. FOSTER.

BOX MOTION FOR LOOMS. APPLICATION FILED No.26. 1914.

1,182,549. Patented May 9, 1916.

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G. M. FOSTER.

BOX MOTION FOR LOOMS.

APPLICATION FILED 056.26. 1914.

1,182,549. Patented May 9, 1916.

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HTII H II II H Id! 1 H H H II G M. FOSTER.

BOX MOTION FOR LOOMS.

APPLICATION FILED DC.26. 1914.

Patented May 9,1916.

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G. M. FOSTER.

BOX MOTION FOR LOOMS.

AFPLICATION FILED DEC.26. 1914.

1,182,549. Patented May 9,1916.

5 SHEETS-SHEET 4.

G. M. FOSTER.

BOX MOTION FOR LOOMS.

APPLICATION FILED ozc.2e. 1914.

Patented May 9, 1916.

5 SHEETS-SHEET 5 WIT E5555 GTON.

umnu PLANOGRAPH c UNITED STATES PATENT OFFICE.

GEORGE M. FOSTER, OF LOWELL, MASSACHUSETTS, ASSIGNOR TO SAOO-LOWELL SHOPS, OF BOSTON, MASSACHUSETTS A CORPORATION OF MASSACHUSETTS.

BOX-MOTION FOR LOOMS.

Application filed December 26, 1914.

To all whom it may concern:

Be it known that I, GEORGE M. FOSTER, of Lowell, in the county of Middlesex and State of Massachusetts, a citizen of the United States, have invented a new and useful Improvement in Box-Motions for Looms, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part of this specification, 1n explaining its nature.

The present invention relates to a box motion for looms.

The essential object of my invention is to provide a simple, effective apparatus easily applied to a loom.

My invention can best be seen and understood by reference to the drawings in which the motion is shown applied to a loom of a common type, the end portion only of the loom being shown and such other elements as are necessary to indicate the manner in which the box motion is applied to the loom and the mode of its operation.

In the drawings: Figure 1 shows the parts in front elevation. Fig. 2 is a side elevation thereof. Fig. 3 is an enlarged front elevation of a portion of the operating mechanism to which special reference will hereinafter be made. Fig. 4 is a view mainly in side elevation and partly in section taken on the line 4-4 of the mechanism shown in Fig. 3. y is mainly a Fig. 0 side elevation though in part a section taken on the line 5 of Fig. 3. Fig. 6 is partly a side elevation and partly a section of a detail of the apparatus. Fig. 7 is an enlarged plan of a portion of the operating parts. Fig. 8 is a front end elevation of the mechanism shown in Fig. 7. Fig. 9 is a view mainly in side elevation but partly in section taken on the line 9 9 of Fig. 7. Fig. 10 is a rear end elevation of a portion of the apparatus shown in Fig. 7. Fig. 11 is a front side elevation of the parts shown in Fig. 7. Fig. 12 is a view partly in side elevation and partly in section of certain of the operating parts shown in Fig. 7. Fig. 13 is a view mainly in longitudinal vertical section of certain of the elements shown in enlarged detail in Fig. 7 and subsequent figures.

Referring to the drawings :1 represents the side of the frame adjacent to Which is Specification of Letters Patent.

Patented May 9, 1916.

Serial No. 879.027.

arranged the box motion comprising my invention.

2 is the crank shaft, 3 the lay.

4 is one of the swords supporting the lay and which is mounted upon the rocker shaft 5.

6 is one of the crank arms which connect the lay with the crank shaft and through which the lay is reciprocated from this shaft in the usual manner.

7 is the shuttle box, 8 the housing for this box, and 9 is the picker stick. This stick at its bottom end is fulcrumed upon a bar 10 which extends in parallelism with the rocker shaft 5 and connects therewith through the interposition of a block 11, the connection in other words, being such that the picker stick may be moved in unison with the lay in the usual manner.

Connecting with the heel of the picker stick is a strap 12 secured to a spring 13 which connects with a block 14- secured to the rocker shaft 5. This connection is such as to yieldingly maintain the picker stick in its normal position and return it to such position after it has been thrown.

15 is the cam shaft.

16 is one of the picking cams mounted upon this shaft.

17 is the cone on which this cam acts.

18 is the picking shaft to which the cone is secured.

19 is the picking shaft arm carried by the picking shaft and to which a collar 20 is secured. This collar connects with the picker stick through a strap 21, stick Q2 and strap 23, the parts cooperating with one another in the usual manner to throw the picker stick as the cam shaft is rotated. In fact, all of the parts above indicated are elementary having the usual manner of operation which is well understood, and are referred to merely for the purpose of indicating the relationship or manner of cooperation of the elements of the device comprising my invention, and to which reference will now be made.

The cam shaft extends beyond the side 1 of the frame and upon the end of this shaft is arranged a substantially heart-shaped cam 2& (see Fig. 2). This cam has operative connection with a lever 25 which is hung by a pivot pin 26 on the frame 1 at a point back of the cam 24 and thence extends under and by the cam in a substan tially horizontal direction parallel with the frame side so that the forward free end of the lever may have a substantially vertical up and down movement. This movement is effected by the cam 24 which operates to lift the lever and then permit of the return or fall thereof by gravity. For lifting the lever the cam has engagement with an arm 27 which is hinged to the lever at the point '28 lying back of the cam, thence extends over the cam to bear against a prong 29 fixed to the lever forward of the cam and against which the arm is yieldingly held by means of a spring 30 which connects with the end of the arm and with the lever 25 forward of the Cam.

lVith the parts thus arranged, the cam turns within the housing formed by the arm 27 and prong 21), While the position of the lever is determined by the bearing of the arm 27 against the edge of the cam, the arm resting thereon by gravity, the weight of the lever and attached parts being sullieient to make such bearing a continuous one.

The lever 25 might extend directly over the cam to rest thereon, but for a purpose to be later explained the yielding arm 27 is employed.

In connection with the operation of the lever it is to be observed that the eccentricity of the cam is such that after the lever has been lifted by the cam to a raised position it will be maintained by the cam and dwell in such position for an appreciable length of time. Likewise when the lever is dropped it will dwell for an appreciable period of time in its lowered position. Roughly, the dwell in both instances approximates the time of one-half a revolution of the cam shaft, the eccentricity of the cam being such as to quickly raise the lever and also permit of a relatively quick fall or drop thereof between the extremes of its raised and lowered positions.

Pivoted to the end of the lever 25 to hang therefrom is a rod 31 (see Figs. 3 and 4). This rod extends downward to lie alongside an endless belt The belt is vertically arranged. At the top end thereof the belt passes around a spool supported by a bracket 34 fixed to the frame 1. At its bottom end the belt passes around a short shaft 35. This shaft is practically an extension of the rocker shaft 5 though arranged to turn either therewith or independently thereof. This effect is obtained by turning down the end of the rocker shaft to form a center or core 36 (see Fig. 6), on which the shaft is loosely fitted or so that it may turn freely. The belt 32 is fastened to the shaft 35 by a pin or screw 37 admitting of the shaft being turned by the belt either forward or backward for about a half revolution of the shaft. The

shaft 35 bears upon its end a crank disk 38 having a crank pin 39. Connecting with this crank pin is a lifting lever 40 which connects with the under side of the shuttle box (see Fig. 1).

The adaptation of the belt shaft and crank arrangement above referred to is such that as the belt is moved in reverse directions it will operate to shift the position of the shuttle box, or, in other words, raise or lower it so that the picker stick may operate upon the shuttles in the usual manner.

Force is imparted to the belt for moving it in reverse directions by the operation of the lever As was above explained, the rod 51 lies alongside the belt. Fixed to the end of this rod and projecting at right angles thereto is a pin 41. This pin extends between the oppositely-running portions 42 and 43 of the belt and lies parallel therewith. Fastened to the interior sides of the portions 42 and 43 of the belt are hooks 4t and 45, I'QSPCCtlCGl Y. The relation of the lever 25 and rod 31 to these hooks is such that when the lever 25 is in its lowest or dropped position the rod 31 may be turned and the pin 41 carried by the rod moved to a position beneath one or the other of the hooks 44, 45, so that when the lever 25 is raised by the cam it will operate by the lift upon the hook and side of the belt to turn the belt in a. forward or reverse direction depending upon the hook with which the pin is in engagement.

The location of the hooks 44, on the belt with relation to one another and to the other operating parts and, in fact, the relation of the entire chain of mechanism operating the lifting lever 40 is such that when the pin 41 on the rod 31 is in working contact with the hook 44 and side 42 of the belt to which this hook is secured, the elevation of the lever 25 by the cam will operate to turn the belt backward just a stiflicient amount to lift the shuttle box into its proper elevated position. The shuttle box will remain in this position until the belt is reversed or shifted by the lever 25 and such shifting of the belt will not take place until the pin 41 by the shifting of the rod 31 has been moved beneath the hook 45 on the side 48 of the belt when a subsequent lifting of the lever will reverse the belt and lower the shuttle box. In this connection it is to be observed that when the lever by the upward movement thereof has lifted the belt in either direction through the en gagement of the pin 41 with one of its hooks on one side of the belt, such movement of the belt tends to lower the hook on the other running side of the belt into a position where the pin 41 may slip under the same upon shifting the position of the rod 31 and thereby effecting the shifting of the belt when the lever 25 is again raised.

In order to attain a proper positioning of the hooks 44, it is desirable that they be adjust-ably secured to the belt. Each outer side of the belt adjacent Where the hooks are located is reinforced by a plate 46. Each of the hooks is carried by a shank i7 and these shanks are secured to the respective plates 46 by bolts 18 which pass through slots 49 formed to extend longitudinally in the belt and plates, and are secured by nuts 50 (see Figs. 3 and 4).

In order to steady the operating parts and especially to prevent the action of gravity effecting a too rapid return of the shuttle box to its lower position, I prefer to provide the shaft with a friction device, the same comprising a strap 51 passed around the shaft and bearing tensionally against the same. By reference to Fig. 5 it will. be seen that one end of this strap connects with a hook This hook is carried by a bracket 53 secured to the bar 10. The shank of the hook passes upwardly through the turned end 5-!- of this bracket and through the other end of the strap resting upon the upper side of the turned end of the bracket. Draft is exerted upon the hook for the purpose of tensionally holding the strap to bear against the shaft by means of a coiled spring 55 arranged upon the shank of the hook above the turned end of the bracket and bearing against the same. This spring is held under compression by means of a nut .76 threaded upon the shank of the hook above the spring.

Reference will now be made to the mechanism by which the parts above described may be controlled to change the position of the shuttle box in a precise manner, in proper sequence with the other operating parts of the machine and according to a determinate plan depending upon the filling eli'ect desired to be attained.

Rising from the forward end of the side i of the frame is an extension 57 carrying a bushing 58 at the top end thereof. Journaled to turn within this bushing is a short shaft 5!) (see Fig. 13). Fixed to this shaft at one side of the bushing is a ratchet wheel (10. Beyond this wheel is a hub 61 mounted to turn upon the shaft This hub carries separate arms (32, (33 (see Fig. 10). ()n the arm 2 there is pivoted a pawl 6i. This pawl has engagement with the ratchet wheel 30 for turning this wheel and the shaft when the pawl is in an engaging position. The arm 63 acts as a lever for turning the hub and operating the pawl. Connecting with the end of this arm is a rod 65 which extends downwardly and is attached to the end of the lever 25. The connection between the rod 65 and the lever arm 63 is a pivoted connection. The rod 65 is provided at the top end thereof with a turnbuckle 66 by which the rod may be lengthened or shortened and this turnbuckle is pivoted to the arm by a pin 67 which extends through a slot 68 cut in the arm so providing an adjustable connection by which the lever may be connected with the arm at various points from its axial center or point of fulcrumage, as occasion may require.

Upon the shaft 59 on the other side of the bushing 58 is a sleeve 70 having sprocket teeth 71 around which is hung a sprocket chain 72 (see Figs. 9 and 13). The sleeve 70 is fixed to the shaft 59, the portion 73 thereof nearest the bushing being internally armed to turn on the bushing. On the end of the shaft 59 is a hand wheel T1 for mannally turning the shaft.

The box chain 72 consists simply of a sprocket chain having short studs 75 projecting from the side thereof facing the bushing. The body of the chain in mesh with the teeth Tl so as to be tinned by them as the shaft 59 is rotated. As the chain is turned the studs T5 will be successively brought to ride over the top surface of the portion 73 of the sleeve. According to the operation of the machine as will later be more fully explained, the shaft 59 and accordingly the box ciain 72 has a determinate step movement through the operation of the pawl and ratchet connection 60, (it as aforeraid. The arrangement of the studs on the side of the chain is such that for each step of movement of the shaft 59 and chain. either one of the studs 753 will be brought to a position directly over the portion 73 of the sleeve with bearing against the same Fig. or this top portion of the sleeve will be left clear owing to a blank space left between successive studs by lengthening the normal distance between them. In other words, the studs 75 togethn' with the blank spaces between certain of the studs correspond relatively with the raised and lowered positions of the shuttle box and consequently with the diiferent picks.

Arranged to extend over the portion 73- of the sleeve to have ta-nsional hearing either directly thereon or upon one of the studs 7.; depending upon the turned position of the box chain) is an arm 30 pivoted to a prong; S1 projecting from the extension of th frame (see Fig. 8). The tensional bean-in of this arm is maintained by means spring ccni'iecting therewith and ex l ing downwardly to connect with an arm .3 secured to the frame extension. li'mnecting with the outer free end of the arm 81) is a. rod 84 which extends downward to connect with the arm 83 of a bell crank lever which is hung pivotally upon the pin 86 that forms the axis of the spool 13% on which the belt turns (see Fig. 3). In order to obtain a positive though yielding connection between the rod 84 and the arm 85 the rod is extended through the end of the arm. On the rod 84 above the arm 85 is a collar 87. The arm 85 is held against this collar by means of a spring 88 arranged upon the end of the rod 8a below the arm and bearing tensionally against the same, the spring being held in place by means of a nut 89 arranged upon the end of the rod 84 (see Fig. 4). 90 is the other arm of the bell crank lever. This arm extends downwardly alongside the belt Projectingat right angles from the end of this arm a pin 91 which passes through the space between the oppositely-running portions 42 and 43 of the belt 32 and into a slot 92 formed to extend longitudinally within the rod 31 (see Figs. 3 and 4).

In the operation of the chain of mechanism last above described the rise and fall of the lever 25 will through the rod 65, arm 63, pawl 6 t and ratchet 6U impart an inter mittent or step movement to the shaft 59, the shaft being turned slightly during the fall of the lever and the pawl being returned over the ratchet to have renewed engagement therewith during the rise of the lever. As the shaft 59 is turned the sleeve will turn with it. The turning of the sleeve turns the box chain. As this chain turns one of. its studs will either be brought to a position directly over the part 73 of the sleeve, thereby lifting the lever which bears thereon, or the bearing of the lever will be maintained in its lowered position directly against the top surface of the sleeve owing to the elimination of a stud leaving a blank in the chain as above described. lVhen the dropping of the lever has imparted a step of movement to the shaft 59 and moved the box chain so that one of its studs 75 has elevated the lever 80, then this lever by and during the elevation thereof will move the bell crank to a position where the pin 91 carried by its arm 92 will move the rod 31 to a position where the pin 41 carried by this rod is beneath the hook 44. The pin i1 is now in position where upon the elevation of the lever by the cam as aforesaid it will engage the hook 4i and turn the belt 32 backward just a sufficient amount to lift the shuttle box into its proper elevated position. As the lever and rod 81 carried by it are elevated by the cam the rod 31 will slip over the pin 91 on the bell crank by reason of the slot 93 formed in the rod.

As the lever is elevated for shifting the belt as aforesaid it will also operate to move the pawl to a position of renewed engagement with the ratchet as above explained. During the next descent of the lever 25 the shaft 59 and box chain will be moved the same as before through a single step of movement. If for this movement of the box chain one of the studs 75 on the chain is again presented to maintain the lever 80 in an elevated position, then this lever operating as before will bring the pin 91 of the bell crank into a position beneath the hook 44. As the lever 25 now becomes elevated by the cam no shifting of the belt will take place and the shuttle box will remain in its elevated position owning to the fact that the previous shifting of the belt has raised the hook 44 into a raised position where the lifting of the lever 25 will have no operative effect thereon. If, on the other hand, the turning of the shaft 59 and box chain through a step of movement has been such that no stud 75 will be brought into engagement with the lever 80 owing to the elimination of a stud or blank in the chain, then the lever 80 will move downward to bear directly against the top surface of the part 73 of the sleeve. As the lever 80 assumes such bearing it will then operate to turn the bell c ank to a position where the pin 91 carried by it will move the rod 31 to a position where the pin 41 carried by this rod is beneath the hook 45 on the part 43 of the belt. The pin 41 is now in a position where upon the elevation of the lever 25 by the cam it will engage the hook 45 and turn the belt 32 forward just a sufiicient amount to drop the shuttle box into its proper lowered position where it will remain until one of the studs 75 has been brought by the turning of the box chain into engagement with the lever 80 when the belt will again be shifted with the same operation as before.

The operation of the box in its relation to the operation of the loom is such that the change in the box or boxes is completed during the period when the shuttles are at rest. Just prior to the time when the picking cam 16 engages the cone 17 for throwing the picker-stick, the cam 24 will have been turned to a position where the arm 27 of the lever 25 of the primary operating mechanism will bear against the surface 95 of the cam. The cam 24 will then have operated to have lifted or moved forward the lever 25. This action of the lever tends as above described to raise or lower the shuttle box preliminary to the picking operation according as the connecting link 31 has engagement with one side or the other of the belt 32 of the secondary mechanism. The elevation or moving forward of the lever 25 acts also to reverse the pawl 64 on the ratchet wheel 60 throwing the pawl into a fresh engaging position with the ratchet Wheel in order that it may impart a step of movement thereto and to the box chain when the lever 25 again drops. The lever 25 is maintained in a raised position until the picking operation has been completed by the return of the shuttle to its box. Thereupon the cam will have turned to a position where the arm 27 of the lever 25 will enter upon the surface 96 0f the cam allowing the lever 25 of the primary mechanism to reverse or drop. By the drop of the lever 25 the connecting link 31 will be moved downward or lowered to a position where the pin 41 car ried thereby may have engagement with one or the other of the hooks 44, 45 for lifting one side or the other of the belt of the secondary mechanism when the lever 25 is again lifted. The drop of the lever 25 also operates through the pawl and ratchet connection to turn the shaft 59, sleeve and box chain through a single step of movement, thereby controlling the position of the lever 80 to throw the connecting link 31 into engagement with one or the other ofthe parts of the secondary mechanism so that when the lever 25 of the primary mechanism is again lifted or moved forward in one direction it will operate to move the secondary mechanism in either a forward or reverse direction for raising or lowering the lifting rod and box carried thereby dependent upon the system of the box chain. In this connection it is of course evident that where there are two or more successive studs in the box chain or two or more successive spaces left therein by the elimination of the studs, no change will be effected in the position of the connecting link 31 during the period of such succession. Accordingly no change will be effected in the secondary mechanism lifting rod and box by the lever 25 until such time as a stud of the box chain is followed by a space during the next successive step of movement thereof orvice versa a space is followed in a successive step by a stud.

The operation then continues as before; in other words, ust prior to the time when the picker-cam becomes operative, the cam 2i will have become turned to a position where the lever 25 is elevated, thereby positioning the box or boxes preliminary to the picking operation.

In further reference to the arm 27 of the lever 25, which arm bears against the cam 2- this arm as described above is a yielding arm and provides a safety device in case any obstruction should prevent the shuttle box or boxes from moving freely, as for example, in case a shuttle or the picker rod should become caught in the box. Under such circumstances the cam 24: would continue to turn but without breaking any of the operating parts owing to the yielding of the arm 27.

Having thus fully described my invention, I claim and desire to secure by Letters Patent of the United States 1. in a shuttle box motion for looms, the combination with a lifting rod for the shuttle box, of a primary operating mechanism having an intermittent forward and reverse movement. a movable connection carried thereby, a secondary mechanism operable either-- with a determinate forward or reverse movement and connecting with said lifting rod for raising and lowering the same. said secondary mechanism having separate parts either of which is adapted to i'c wci'vt the engagement of said movable con auction for connecting said primary and secondary mechanisms and through which engagement with the one or the other of said arts of the secondary mechanism it may be moved either with a forward or reverse movement as said primary mechanism is moved forward in one direction, and means whereby said movable connection may be systematically and automatically shifted to have engagement with one or the other of the said parts of the secondary mechanism during the reverse movement of said prima ry mechanism.

2. in a shuttle box motion for looms, the combination with a lifting rod for the shuttie box. of a primary operating mechanism having an intermittent forward and reverse movement. a movable connection varied thereby, a secondary mechanism operable either with a determinate forward or reverse increment and connecting with said lifting rod for raising and lowering the same, said secondary mechanism having separate parts either of which is adapted to receive the engagement of said movable connection for connecting said primary and secondary mechanisms and through which engagement with the one or the other of said parts of the secondary mechanism it may be moved either with a forward or reverse movement as said primary mechanism is moved forward in one direction, and means operated by said primary mechanism during the reverse movement thereof for systematically rhifting the po ition of said movable connection to have engagement with one or the other of said parts of said secondary mechanism.

3. In a shuttle box motion for looms, the combination with a lifting rod for the shuttle box, of a primary operating mechanism consisting in part of a lever, means whereby .aid lever may be operated to have a forward and reverse movement at determinate intervals during the operation of the loom, a movable connection carried by said lever, a secondary mechanism operable either with a determinate forward or reverse movement and connecting with said lifting rod for raising and lowering the same, said secondary mechanism having separate parts either of which is adapted to receive the engagement of said movable connection for connecting said lever with said secondary mechanism and through which engagement with the one or the other of said parts of the secondary mechanism it may be moved either with a forward or reverse movement as said lever is moved in one direction, and means whereby said movable connection may systematically and automatically be shifted to have engagement with one or the other of said parts of the secondary mechanism during the reverse movement of said lever.

4. In a shuttle box motion for looms, the combination with a lifting rod for the shuttle box, of a primary operating mechanism consisting in part of a lever, means whereby said lever may be operated to have a forward and reverse movement at determinate intervals during the operation of the loom, a movable connection carried by said lever, a secondary mechanism operable either with a determinate forward or reverse movement and connecting with said lifting rod for raising or lowering the same, said secondary mechanism having separate parts either of which is adapted to receive the engagement of said movable connection for connecting said lever with said secondary mechanism and through which engagement with the one or the other of said parts of the secondary mechanism it may be moved either with a forward or reverse movement as said lever is moved in one direction, and means operated by said lever during the reverse movement thereof for systematically changing the position of said movable connection to have engagement with one or the other of said parts of said secondary mechanism.

5. In a shuttle box motion for looms, the combination with a lifting rod for the shuttle box, of a primary operating mechanism having an intermittent forward and reverse movement, a movable connection carried thereby, a secondary mechanism operable either with a. determinate forward or reverse movement and connecting with said lifting rod for raising and lowering the same, said secondary mechanism comprising in part an endless belt having oppositelyrunning portions, means whereby said movable connection may have engagement with one or the other of said running portions of the belt and said secondary mechanism be moved thereby either with a forward or reverse movement as said primary mechanism is moved in one direction, and means whereby said movable connection may be systematically and automatically shifted to have engagement with one or the other of said running portions of the belt during the reverse movement of said primary mechanism.

6. In a shuttle box motion for looms, the combination with a lifting rod for the shuttle box, of a primary operating mechanism having an intermittent forward and reverse movement, a movable connection carried thereby, a secondary mechanism comprising an endless belt with portions thereof run ning in opposite directions, a shaft turned by said belt, a crank operated by said shaft and connecting with said lifting rod, means whereby said movable connection may have engagement with one or the other of said oppositely-running portions of the belt whereby said shaft and crank may be moved either with a forward or reverse movement as said primary mechanism is moved in one direction, and means whereby said movable connection may be systematically and automatically shifted to have engagement with one or the other of said running portions of the belt during the reverse movement of said primary mechanism.

7. In a shuttle box motion for looms, the combination with a lifting rod for the shuttle box, of a lever, means for operating said lever to have an intermittent forward and reverse movement, a link loosely connecting with said lever and movable therewith, said link having a turned end, a secondary mechanism comprising an endless belt with running portions thereof moving in opposite directions, said portions of the belt each being provided with members with which the turned end of said link extended between said running portions of the belt is movable to have connection for moving said belt either in a forward or reverse direction as said lever is moved forward in one direction, means whereby the motion of said belt may be transmitted for raising and lowering said lifting rod, and means whereby said link may be systematically and automatically shifted to have engagement with one or the other member carried by the respective running portions of the belt during the reverse movement of said lever.

8. The combination in a loom having a movable shuttle box and the usual rocker shaft for the lay, of a lifting rod for said shuttle box, a primary operating mechanism having an intermittent forward and reverse movement, a movable connection carried thereby, a secondary mechanism operable either with a determinate forward or reverse movement and connecting with said lifting rod for raising and lowering the same, said secondary mechanism having separate parts either of which is adapted to receive the engagement of said movable connection for connecting said primary and secondary mechanisms and through engage ment with the one or the other of said parts of the secondary mechanism it may move either with a forward or reverse movement as said primary mechanism is moved forward in one direction, said secondary mechanism comprising also a shaft arranged to turn either with said rocker shaft or independently thereof in a forward or reverse direction, and means whereby said movable connection may be systematically and automatically shifted to have engagement with one or the other of the said parts of the sec ondary mechanism during the reverse movement of said primary mechanism.

9. The combination in a loom having a movable shuttle box and the usual cam shaft and rocker shaft, of a lifting rod for the shuttle box, and primary and secondary operating mechanisms for controlling said rod, said primary mechanism comprising a lever and a cam on said cam shaft for operating said lever, a secondary mechanism having a forward and reverse movement and connecting with said lifting rod for raising and lowering the same, a movable connection carried by said lever and adapted to have changeable engagement with said secondary mechanism whereby said lever during the forward movement thereof in one direction may move said secondary mechanism in a forward or reverse direction de pendent upon the engaging position of said movable connection, and means operated by said lever during the reverse movement thereof whereby said movable connection may be systematically shifted to have a changeable engagement with said secondary mechanism.

10. In a shuttle box motion for looms, the combination with a lifting rod for the shuttle box, of primary and secondary mechanisms and a movable connection adapted to have a changed engagement with said secondary mechanism whereby said primary mechanism may move the same either in a forward or reverse direction for elevating or lowering said lifting rod dependent upon the engaging position of said movable connection, and mechanism for systematically changing the engaging position of said movable connection during the reverse movement of said primary mechanism, the same comprising a box chain, means whereby said chain is given a determinate step of movement during and by the reverse movement of said primary mechanism, and means controlled by said chain and connecting with said movable connection for changing the engaging position thereof.

11. In a shuttle box motion for looms, the combination with a lifting rod for the shuttle box, of primary and secondary mechanisms and a movable connection adapted to have a changed engagement with said secondary mechanism whereby said primary mechanism may move the same either in a forward or reverse direction for elevating or lowering said lifting rod dependent upon the engaging position of said movable connection, and mechanism for systematically changing the engaging position of said movable connection during the reverse movement of said primary mechanism, the same comprising means connecting with said movable connection and having a determinate forward and reverse movement for changing the position of said movable connection, a box chain controlling said means to have a forward and reverse movement according to the determinate form of said chain as said chain is moved through determinate steps of movement, and means whereby said primary mechanism during the reverse movement thereof may move said chain through a determinate step of move ment.

12. In a shuttle box motion for looms, the combination with a lifting rod for the shuttle box, of primary and secondary mechanisms and a movable connection adapted to have a changed engagement with said secondary mechanism whereby said primary mechanism may move the same either in a forward or reverse direction for elevating or lowering said lifting rod dependent upon the engaging position of said movable connection, and mechanism for systematically changing the engaging position of said movable connection during the reverse movement of said primary mechanism, the same comprising an operating means connecting with :id movable connection and main tained to have a determinate forward and reverse movement for changing the engaging position of said movable connection, said operating means consisting in part of a lover, a box chain controlling the movement of said lever and said operating means as said chain is moved through determinate steps of movement, and means whereby said chain may be moved through determinate steps of movement by said primary mechanism during the reverse movement thereof.

In a shuttle box motion for looms, the combination with a lifting rod for the shuttle box, of primary and secondary mechanisms and a movable connection adapted to have 1 changed engagement with said secondary mechanism whereby said primary mechanism may move the same either in a forward or reverse direction for elevating or lowering said lifting rod dependent upon the en aging position of said movable connection, and mechanism fors vs tematically changing the engaging position of said movable connection during the reverse movement of said primary mechanism, the same comprising an operating means connecting with said movable connection to have a determinate forward and reverse movement for changing the engaging position of said movable connection. said operat ing means consisting in part of a lever, an endless box chain bearing spaced studs having a determinate arrangement on said chain whereby the studs thereof as said chain turned through determinate steps of movement may be brought successively under said lever elevating the same, and means whereby said chain may be turned through determinate steps of movement by said primary mechanism during the reverse movement thereof.

14. In a shuttle box motion for looms, the combination with a lifting rod for the shuttle box, of primary and secondary mechanisms and a movable connection adapted to have a changed engagement with said secondary mechanism whereby said primary mechanism may move the same either in a forward or reverse direction for elevating or lowering said lifting rod de pendent upon the engaging position of said movable connection, and mechanism for systematically changing the engaging position of said movable connection during the reverse movement of said primary mechanism, the same comprising means connecting with said movable connection and maintained to have a determinate forward and reverse movement for chan ing the engaging position of said movable connection. said means consisting in part of a lever, a shaft, means whereby said shaft may be turned through determinate steps of movement by said primary mechanis n during the reverse movement thereof, a sleeve mounted upon said shaft and turning therewith and against which sleeve said lever has bearing, an endless box chain carried by said sleeve to turn thereon, said chain bearing spaced studs having a determinate arrangement and cooperating with said lever for changing the position thereof as described.

15. In a shuttle box motion for looms, the combination with a lifting rod for the shuttle box, of a primary mechanism con sisting in part of a lever, means whereby said lever may be operated to have a for ward and reverse movement at determinate intervals during the operation of the loom, a secondary mechanism operable either with a determinate forward or reverse movement and connecting with said lifting rod for raising and lowering the same, a movable connecting link carried by said lever to have changeable engagement with said secondary mechanism whereby said lever during the forward movement thereof in one direction may move said secondary mechanism with either a forward or reverse movement dependent upon the engaging position of said link, and mechanism for systematically changing the engaging position of said movable connection during the reverse movement of said lever, the same comprising means having operative connection with said link and maintained to have a determinate forward and reverse movement for changing the engaging position of said link, the said means consisting in part of a lover, an endless box chain bearing Spaced studs having a determinate arrangement on said chain whereby the studs as said chain is turned through determimite steps of movement may be brought successively under said lever for operating the same, and means whereby said chain may be turned through determinate steps of movement by said lever during the reverse movement thereof.

GEORGE M. FOSTER.

lVitnesses GEORGE F. Torn, DENNIS A. MURPHY.

Copies of this patent may be obtained or five cents each, by addressing the Commissioner of Patents,

Washington, D. G." 

